Ios 同步cabasicanitation和UIView.animate使其相同

我试图创建一个动画，当用户拖动一个

UIView

然后释放它时，

UIView

返回到它的初始位置。问题是，我有

CAShapeLayer

连接到

UIView

，我想在

UIView

返回它的位置时保持连接

CAShapeLayer

使用CABasicAnimation，而

UIView

使用

UIView.animate

如果我想要相同的EaseOut减速，如何在两者之间获得相同的定时？现在两个动画都离我们太远了

        let destinations = self.myAspectDestination[self.viewToDrag.accessibilityIdentifier!] ?? []
        for destination in destinations {
            if let link: CAShapeLayer = self.myAspects["\(self.viewToDrag.accessibilityIdentifier!):\(destination)"] {
                let newPath = UIBezierPath()
                newPath.move(to: (self.myPlanets[destination]?.center)!)
                newPath.addLine(to: self.originalLocation)
                let animation = CABasicAnimation(keyPath: "path")
                animation.duration = 1
                animation.isRemovedOnCompletion = true
                animation.timingFunction = CAMediaTimingFunction(name: kCAMediaTimingFunctionEaseOut)
                animation.fillMode = kCAFillModeBoth // keep to value after finishing
                animation.fromValue = link.path
                animation.toValue = newPath.cgPath
                animation.timingFunction = CAMediaTimingFunction(name: "easeInEaseOut")
                link.path = newPath.cgPath
                link.add(animation, forKey: animation.keyPath)
            }
        }

        UIView.animate(withDuration: 1, delay: 0, usingSpringWithDamping: 1, initialSpringVelocity: 0, options: UIViewAnimationOptions.curveEaseOut, animations: {
            self.viewToDrag.center = self.originalLocation
        }) { (result) in
            self.viewToDrag = nil
        }

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可能有用（重复？）。我的CAShapeLayers不是动画视图的子层。。。这里不一样。。。